My favorite pair of metallic flats I found at Express in 2004. They were $2 on clearance - by far one of my best bargain buys ever. Once those wore out nearly a year later, I found two more pairs on Ebay. I still have a clean pair in my closet right now.

And actually, I was at Banana Republic today and saw a great pair of gold sandals... I guess when I'm speaking of flats I'm thinking of flat flip flops.